Granny Flat & Second Dwelling Zoning Rules SA (2026)

There's no single national rule for granny flats in South Africa. The actual rule, whether you need council's written consent, what it may be called on your zoning certificate, and how big it may be, differs from one municipality's own scheme to the next. This article compares five metros' published second dwelling rules side by side, using the actual scheme clauses rather than general summaries. For the full picture of what your zoning certificate lets you build before adding a second dwelling, see our Zoning Certificate & SG Diagram Guide.

What "Second Dwelling" and "Granny Flat" Actually Mean

"Granny flat" is what almost everyone actually types into Google, and it's the term we'll use throughout this article for that reason. No South African municipality's own zoning scheme uses it, though. Each writes its own formal term into its town planning scheme, and the terms genuinely differ: Johannesburg's Land Use Scheme calls it a "subsidiary dwelling unit," Ekurhuleni's Town Planning Scheme calls it a "second dwelling unit," and Cape Town's Municipal Planning By-law simply refers to "a second dwelling." Whichever word your own municipality uses, it means the same underlying thing: a separate, self-contained additional living unit on an erf that already has a main house, built for a parent, adult child or tenant, or simply for extra rental income, not a new erf and not a new sectional title scheme.

This terminology gap matters in practice, not just semantically. Search your own municipality's scheme document for "granny flat" and you'll find nothing, because the actual rule sits under whatever formal term that scheme uses. Ask your town planning department about a "granny flat" and most officials will understand you immediately, but the zoning certificate they hand you will list the formal term, not the colloquial one, so know both before you go looking.

Do You Need Rezoning for a Second Dwelling?

Usually not, and this is the most common assumption this article corrects. Rezoning changes your erf's actual zoning category, a much larger step reserved for when your existing zoning genuinely doesn't provide any route to what you want to build. A second dwelling is different: every metro compared below already has a route to it built into its existing Residential zoning categories, either as a right you can simply exercise or as a consent use application that still operates inside your current zoning, never as a change of zoning category itself.

The practical difference is speed and cost. A rezoning application is a full public land use process, typically with notice, an objection period and, in contested cases, a hearing before the municipality's Planning Tribunal. A second dwelling application, where one is even required, is a narrower consent use process against rules your zoning scheme has already published. Only consider rezoning if your erf's actual zoning category has no residential use right at all, which is rare for an erf that already carries a main house. Our Zoning Certificate & SG Diagram Guide's rezoning section covers the fuller process for when you do need it.

Second Dwelling Rules by Metro

Here's what each of the five largest metros' own published town planning scheme or by-law actually says about a second dwelling on a standard Residential 1 erf, current at the time of writing.

Johannesburg and Ekurhuleni figures are drawn directly from each city's own currently published Land Use Scheme (Clause 21) and Town Planning Scheme (Clause 23.5) respectively. Cape Town's right is confirmed in its Development Management Scheme. Tshwane's consent use requirement is confirmed via a practising town planning firm's published guidance citing the Scheme and by-law clause numbers directly; we could not independently fetch the primary Scheme document itself to quote it verbatim, so we've left out any procedural detail (such as which portal an application goes through) that isn't in that secondary source's own clause citation. eThekwini's own sub-scheme documents could not be fetched directly at the time of writing (a recurring access issue with this metro's own site, also noted on our cornerstone guide), so we could not confirm what its scheme actually calls this unit, only that some published material discusses a comparable concept; treat that row as the genuine, published gap it is, not a confirmed figure or term.

Cape Town has the simplest position of the five: a second dwelling on SR1-zoned land has been an additional use right since 2016, meaning no separate land use application is needed at all, only compliance with your title deed and the erf's own coverage, FAR and height limits.

Johannesburg's Land Use Scheme, 2018 is unusually generous and specific: an owner may erect up to two subsidiary dwelling units on a Residential 1 erf as a right, with the combined floor area capped at 160m² or 90% of the main dwelling house, whichever is the lesser. No formal application is required unless a unit exceeds one storey, in which case written council consent and a 28-day neighbour notification period apply. Neither the second dwelling units nor the main house may be sectionalised or sold separately.

Ekurhuleni's Town Planning Scheme, 2014 takes the opposite approach: a second dwelling unit always needs the municipality's Written Consent B, regardless of size, and the maximum size itself scales with your erf: none at all under 250m², 50m² on a 250 to 499m² erf, but only if it carries Residential 2 zoning rather than Residential 1, 100m² on a 500 to 800m² erf, and effectively unlimited above 801m², provided ordinary coverage and height limits aren't exceeded.

Tshwane also requires a consent use application under Clause 16 of the Tshwane Town-planning Scheme, 2008 (revised 2014) and section 16(3) of the City of Tshwane Land Use Management By-law, 2016, rather than treating it as an automatic right. Rules can also vary by suburb, so confirm your own zoning certificate rather than assuming a neighbour's approval sets a precedent for yours.

eThekwini has the thinnest published process of the five, the same gap our cornerstone guide found when checking how to find a zoning certificate in this metro. We could not independently confirm either a reliable size figure or the scheme's own formal term for this unit from a primary source at the time of writing. Contacting the municipality's Town Planning department directly is currently the only confirmed route to a real answer.

Third Dwellings: Where They're Actually Allowed

A third dwelling is a genuinely different question from a second, and only one metro in this comparison has a clearly published answer. Cape Town's SR1 zoning has allowed a third dwelling since February 2020, four years after the second dwelling right itself, subject to the same title deed conditions that apply to a second dwelling plus one extra requirement: the erf must have adequate municipal services to support it. That additional-services test is specific to a third unit; it doesn't apply to a second dwelling on the same erf.

We could not confirm an equivalent, clearly published third dwelling right in Johannesburg's, Ekurhuleni's, Tshwane's or eThekwini's own scheme documents at the time of writing. That doesn't necessarily mean a third unit is impossible in those metros, only that no confirmed general right or consent-use route for it appears in what each city currently publishes online. If you're planning a third unit outside Cape Town, raise it directly and explicitly with your municipality's town planning department rather than assuming your second-dwelling approval extends to it.

Restrictive Title Deed Conditions Can Still Say No

Every rule compared above describes what your municipality's zoning scheme allows. Your title deed is a separate document, and it can override all of it. A restrictive condition registered on your title, most commonly a limit to a single dwelling on the erf, still applies even where your zoning certificate confirms a second dwelling right, and it doesn't expire simply because it's old or because a neighbouring erf's title doesn't carry the same condition.

This shows up constantly in newer estates and cluster developments, where an estate's own set of title conditions is frequently stricter than the municipality's underlying zoning. Removing or varying a restrictive title condition is a separate legal step from anything your zoning certificate covers, typically involving a conveyancer and, depending on who the condition benefits, that party's consent. Read your own title deed in full before you design a second dwelling, not just your zoning certificate; assuming the zoning right is the only question to answer is one of the most common, and most expensive, mistakes on this topic.

Common Mistakes When Adding a Second Dwelling